Double Tag Events in Two-Photon Collisions at LEP

Details Double Tag Events in Two-Photon Collisions at LEP Double Tag Events in Two-Photon Collisions at LEP

2000-10-13

arxiv.org/abs/hep-ex/0010028v1

Physics

High Energy Physics

High Energy Physics - Experiment

3 pages, 3 figures, Talk given on behalf of L3 experiment at ICHEP2000, Osaka, Japan

Scientific paper

10.1063/1.1402830

Double tag events in two photon collisions are studied using the L3 detector at the LEP center of mass energies $\sqrt{s} \simeq 189-202$ GeV. The cross-section of $\gamma ^* \gamma ^*$ collisions is measured at an average photon virtuality $ = 15 \rm{GeV}^2$. The results are in agreement with Monte Carlo predictions based on perturbative QCD, while the Quark Parton Model alone is insufficient to describe the data. The measurements are compared to the LO and the NLO BFKL calculations

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